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The overpass is a special over-road structure for vehicle transportation, constituting one type of roadway intersection. Real-time communications between on- and under-overpass vehicles can contribute to optimal route selection and overpass accident warning messaging. In this paper, we provide measurement and analytical results for V2V propagation path loss in the 5 GHz band for two example overpasses...
This article is motivated by the recent recognition that channel fading for new wireless applications is not always well described by traditional models used for mobile communication systems. In particular, fading data collected for vehicleto- vehicle and wireless sensor network applications has motivated new models for conditions in which channel fading statistics can be worse than Rayleigh. We review...
In this paper, we compare the two most common types of statistical models for V2V channels: the tapped-delay line, and the geometry-based stochastic model. We first provide a description of each model type. Model adaptations and options are described, as is model flexibility, and ability to replicate statistics that agree with measurements. We quantify each model's complexity, and show that the modified...
We analyze performance of a coherently-detected multi-user direct sequence spread spectrum frequency shift keying system. We derive bit error probability expressions for both synchronous and asynchronous systems, on additive white Gaussian noise and Rayleigh fading channels. For the synchronous system, we analyze different orthogonal system variations. Orthogonality is achieved via both frequency...
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